Electronic announcement and siren signal generator and control unit



FIG. 1 is a front perspective view of a first embodiment of an electronic announcement and siren generator and control unit incorporating our new design;

FIG. 2 is a rear perspective thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a left end elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top upper side elevational view thereof;

FIG. 8 is a lower side elevational view thereof;

FIG. 9 is a front perspective view of a second embodiment thereof; which has a different arrangement of control buttons but is otherwise the same as the first embodiment; and,

FIG. 10 is a top plan view of the second embodiment thereof. 

The ornamental design for an electronic announcement and siren signal generator and control unit, as shown and described. 